File Size Formatter is a tool for converting bytes to human-readable file sizes (KB, MB, GB, TB, etc.). It supports both binary (1024) and decimal (1000) standards with customizable precision.

The File Size Formatter API provides a simple, reliable way to integrate file size formatter functionality into your applications. Built for developers who need production-ready file size formatter capabilities without the complexity of building from scratch.

View API Details →

Available on:

async function callFileSizeFormatterAPI() {
    try {
        const params = new URLSearchParams({
            bytes: 1073741824,
            unit: 'GB',
            precision: 2,
            standard: 'binary'
        });

        const response = await fetch(`https://api.apiverve.com/v1/filesizeformatter?${params}`, {
            method: 'GET',
            headers: {
                'x-api-key': 'YOUR_API_KEY_HERE'
            }
        });

        const data = await response.json();
        console.log(data);
    } catch (error) {
        console.error('Error:', error);
    }
}

callFileSizeFormatterAPI();

curl -X GET "https://api.apiverve.com/v1/filesizeformatter?bytes=1073741824&unit=GB&precision=2&standard=binary" \
  -H "x-api-key: YOUR_API_KEY_HERE"

Get your API key: https://apiverve.com

📁 For more examples, see the examples folder

Choose your preferred programming language:

npm install @apiverve/filesizeformatter

View NPM Package → | Package Code →

dotnet add package APIVerve.API.FileSizeFormatter

View NuGet Package → | Package Code →

pip install apiverve-filesizeformatter

View PyPI Package → | Package Code →

gem install apiverve_filesizeformatter

View RubyGems Package → | Package Code →

composer require apiverve/filesizeformatter

View Packagist Package → | Package Code →

dart pub add apiverve_filesizeformatter

View pub.dev Package → | Package Code →

implementation 'com.github.apiverve:filesizeformatter-api:1.0.0'

Package Code →

go get github.com/apiverve/filesizeformatter-api/go

Package Code →

• 🏠 API Home: File Size Formatter API
• 📚 API Reference: docs.apiverve.com/ref/filesizeformatter
• 📖 OpenAPI Spec: openapi.yaml
• 💡 Examples: examples/

The File Size Formatter API is commonly used for:

• Web Applications - Add file size formatter features to your frontend or backend
• Mobile Apps - Native SDKs for Android development
• Automation - Integrate with n8n, Zapier, or custom workflows
• SaaS Products - Enhance your product with file size formatter capabilities
• Data Pipelines - Process and analyze data at scale

All requests require an API key in the header:

x-api-key: YOUR_API_KEY_HERE

Get your API key: https://apiverve.com

Every APIVerve endpoint returns the same envelope — check status, then read data:

{
  "status": "ok",
  "error": null,
  "data": { ... }
}

A real response from the File Size Formatter API:

{
  "status": "ok",
  "error": null,
  "data": {
    "bytes": 1073741824,
    "formatted": "1 GiB",
    "value": 1,
    "unit": "GiB",
    "standard": "binary",
    "precision": 2,
    "conversions": {
      "B": 1073741824,
      "KiB": 1048576,
      "MiB": 1024,
      "GiB": 1,
      "TiB": 0,
      "PiB": 0,
      "EiB": 0,
      "ZiB": 0,
      "YiB": 0
    }
  }
}

• 🏠 API Home: File Size Formatter API
• 💬 Support: https://apiverve.com/contact
• 🐛 Issues: GitHub Issues
• 📖 Documentation: https://docs.apiverve.com
• 🌐 Website: https://apiverve.com

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

For security concerns, please review our Security Policy.

This project is licensed under the MIT License - see the LICENSE file for details.

Built with ❤️ by APIVerve

Copyright © 2026 APIVerve. All rights reserved.